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Of or containing trivalent nickel , ni3 + .

含三价镍的有或含三价镍的，ni3＋。

One means of accomplishing this end is to add trivalent cations to the water .

实现这一目的的一种方法是将三价阳离子加入水中。

Swine infections pleuropneumonia trivalent vaccine , inactivated .

猪传染性胸膜肺炎三价灭活疫苗。

A bivalent and trivalent metallic element of the rare earth group .

稀土属二价和三价金属元素。

She explains that health workers have been using what are called trivalent vaccines in some places .

她解释道，有些地方的医疗工作者一直使用所谓的三价疫苗。